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This study examines a quenched and partitioned steel matrix composite, which was reinforced with 10 vol% Mg-PSZ and processed by Spark Plasma Sintering (SPS). Influence of solution annealing on microstructure and mechanical properties of a quenched and partitioned steel matrix composite processed by SPS" Effect of heat treatment on microstructure and impact toughness of a Tungsten-Molybdenum powder metallurgical high-speed steel The present study investigated the effect of carbon addition on austenite stability in FeMnNi alloys containing different Mn and Ni contents. Both stability and the volume fraction of austenite can be controlled by several factors, including chemical composition, grain size, dislocation density, and so on. Depending on austenite stability and the volume fraction of austenite at a given temperature, strain-induced martensite transformation during plastic deformation may occur.
We investigated the austenite stability and mechanical properties in FeMnNiC alloy fabricated by spark plasma sintering. Thus, the volume fraction of austenite at room temperature after the sintering process was also modified by the TiC addition. It was observed that the addition of TiC influenced the average size of crystallites, resulting in a change in austenite stability.
A sintered Fe-Mn alloy sample with nano-sized crystallites was obtained using spark plasma sintering. The effect of TiC content on the microstructure and mechanical properties of a nanocrystalline Fe-Mn alloy was investigated by XRD analysis, TEM observation, and mechanical tests. Both the yield strength and tensile strength of the steels exhibited a linear correlation with the hardness over the entire range of strength values. Regression analysis was used to determine the correlation of the yield strength and the tensile strength to the diamond pyramid hardness values for these steels. The microstructures include ferrite, pearlite, martensite, bainite, and complex multiphase structures.
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Mechanical properties are discussed as a function of type of materials and process of fabrication. This paper examines various important metals using powder metallurgy technology to produce elements of a total hip replacement. During the past five decades, many implant materials made of metals have been put into practical use. The uses of biomaterials have been revolutionizing the biomedical field in deployment as implants for humans. Effect of intercritical annealing and quenching plus tempering heat treatments on microstructure of Ni added powder metallurgy steels
Chemical composition is developed for new high-strength wear-resistant steels with guaranteed yield strength of 1200, 1500, and 1700 MPa. An attempt is made here to explain the observed phenomena in the yielding and ageing of mild steel, described in two previous papers, in the general terms of a grain-boundary theory. The results show that, for this material, softening takes place in the first few cycles for all values of hardness.
Typical applications include bolts, screws and other fasteners. However, as in motor shaft applications, under quenching and tempering conditions, 4340 steel typically use high preheating in low hydrogen processes. Since 4340 alloy steel is air hardened, the welded parts should be either annealed or normalized and tempered shortly after welding.
The high hardness of 4340 alloy steel requires that the material be welded in the annealed or tempered state and then heat treated to resist martensite formation and cold cracking. The spacing of lattice planes of iron was measured using a high temperature X-ray diffractometry (XRD), which gradually increased with time and arrived at a constant value. TiC precipitation induced effect on microstructure and mechanical properties in low carbon medium manganese steel Chemistry and three-dimensional morphology of martensite-austenite constituent in the bainite structure of low-carbon low-alloy steels